WINDOWAREACOLOR

Determines the color inside the selection window when selecting entities. This system variable takes effect only when the SELECTIONAREA system variable is set to 1.

Type:     OdCmColor (Integer or String)

Saved:     In the registry

Range:      1 to 255, “1” to “255”, “RGB:0-255,0-255,0-255”, "RED", "YELLOW", "GREEN", "BLUE", CYAN", "MAGENTA", "WHITE"

Default:     150